Question

adding and subtracting polynomials
score: 0/2 penalty: 0.25 off
question
perform the operation.
$(x^2 + x - 2) + (-2x^2 - 9x - 7)$
answer attempt 1 out of 2
submit answer

Explanation:

Step1: Remove parentheses

$x^2 + x - 2 - 2x^2 - 9x - 7$

Step2: Combine like terms for $x^2$

$x^2 - 2x^2 = -x^2$

Step3: Combine like terms for $x$

$x - 9x = -8x$

Step4: Combine constant terms

$-2 - 7 = -9$

Step5: Combine all results

$-x^2 - 8x - 9$

Answer:

$-x^2 - 8x - 9$